Mitsugi, Makoto, Tomohito Hiromori, and Masahiro Yoshimura. 2026. “Navigating Leadership and Engagement in L2 Group Work: A Longitudinal Study from a Complex Dynamic Systems Perspective”. The Journal for the Psychology of Language Learning 8 (1):90-126. https://mail.jpll.org/index.php/journal/article/view/mitsugietal.